Specimens are required to be received in the laboratory weekdays and by 4 p.m. on Friday. It is recommended that specimens arrive within 24 hours of draw. Samples arriving on the weekend may be canceled. Draw and package specimen as close to shipping time as possible. Ship specimen overnight in an Ambient Mailer-Critical Specimens Only (Supply T668).

Date and time of draw and ordering physician's name and phone number are required.

For serial monitoring, we recommend that specimen draws be performed at the same time of day.

Two separate specimens are required.

Specimen Type: EDTA whole blood

Container/Tube: Lavender top (EDTA)

Specimen Volume: 3 mL

Collection Instructions: Send specimen in original tube. Do not aliquot.

Specimen Type: Sodium heparin whole blood

Container/Tube: Green top (sodium heparin)

Specimen Volume:

<3 months: 1 mL

3-24 months: 3 mL

25 months-18 years: 5 mL

>18 years: 20 mL

Collection Instructions: Send specimen in original tube. Do not aliquot.